If someone has a blood cancer (i.e. they are damaged at a DNA level) and can only currently be cured by a danagerous stem cell transplant and then the ability c

If someone has a blood cancer (i.e. they are damaged at a DNA level) and can only currently be cured by a danagerous stem cell transplant and then the ability comes along to fix their DNA back to what it previously was at the genetic level wouldnt you agree it would be more unethical to not allow them access to that treatment?